Restorative Dentistry and Orthodontics

Restorative dentistry and orthodontics meet whenever teeth must be repositioned before they can be restored well. Orthodontics is used adjunctively to redistribute spaces, upright tilted abutment teeth, level the gingival margins, and bring teeth into positions where crowns, bridges, veneers, or other restorations can be made with sound form, function, and esthetics. The two disciplines plan together so that tooth movement establishes the foundation the final restorations require.

Definition

Restorative dentistry and orthodontics is the coordinated use of orthodontic tooth movement to establish the tooth positions, spaces, and gingival relationships needed before restorative or prosthodontic treatment, so that the final restorations have a sound foundation.

Scope

The entry covers the adjunctive use of orthodontics in restorative and prosthodontic care: redistributing edentulous space, uprighting tilted molars to receive restorations, forced eruption to manage subgingival defects or alter gingival levels, intrusion of overerupted teeth, and the sequencing of movement before restoration. It is a reference overview of the interface and does not provide restorative or prosthodontic treatment guidance.

Core questions

• When is orthodontic tooth movement needed before a tooth can be restored properly?
• How does uprighting a tilted abutment tooth improve a planned restoration?
• How can forced eruption or intrusion change crown length and gingival level to favor restoration?
• How should orthodontic movement and restorative treatment be sequenced and shared between the disciplines?

Key concepts

• Adjunctive (pre-restorative) orthodontics
• Space redistribution
• Molar uprighting
• Forced eruption
• Intrusion of overerupted teeth
• Gingival margin leveling
• Sequencing of movement before restoration

Mechanisms

Restorations depend on the underlying tooth position, so orthodontics is used to shape that foundation. A tilted molar can be uprighted so that an abutment or implant restoration loads its long axis correctly and the adjacent space becomes restorable. Spaces left by missing or undersized teeth can be consolidated or distributed so that restorations have proper width and proportion. Because moving a tooth carries its periodontal attachment with it, forced eruption can bring a subgingival fracture or caries margin above the gingiva for restoration, or alter the gingival level to match a contralateral tooth; conversely, an overerupted tooth opposing an edentulous space can be intruded to recreate restorative room. Movement is planned to precede the definitive restoration, with provisional restorations often used during and after orthodontics, so that the disciplines build on each other rather than conflict.

Clinical relevance

This interface explains why complex restorative and prosthodontic plans often begin with a phase of tooth movement and why the disciplines coordinate sequencing. The entry describes the relationship for reference; it does not prescribe restorative procedures or orthodontic movements for an individual patient, which are clinical decisions made by the treating team.

Evidence & guidelines

The orthodontic-restorative interface is documented mainly in narrative and textbook syntheses rather than in trials; Kokich's writings on the orthodontic-periodontic-restorative connection and on anterior tooth position are widely cited references that describe the principles of adjunctive orthodontics, forced eruption, and gingival-level management for restorative purposes.

History

Adjunctive orthodontics for restorative purposes grew as orthodontics extended to adults with existing restorations and tooth loss. Through the late twentieth century, techniques such as molar uprighting, forced eruption, and space redistribution were systematized, and the coordination of orthodontics with restorative and prosthodontic care was consolidated in textbook accounts of the interrelationship among the disciplines.

Key figures

• Vincent Kokich
• Frank Spear

Seminal works

• kokich-1996
• kokich-1993-part1

Frequently asked questions

Why would someone need orthodontics before a crown or bridge?

If teeth are tilted, spaced unevenly, overerupted, or set at an unfavorable gingival level, orthodontics can reposition them first so that the restoration has correct width, proportion, and loading and a sound margin.

What is forced eruption used for in restorative care?

Forced eruption deliberately erupts a tooth to bring a deep fracture or decay margin above the gum so it can be restored, or to adjust the gingival level so it matches the neighboring tooth.